基于ADAMS平面转弯带式输送机的动态特性

Dynamic characteristics analysis of belt conveyor with horizontal curves based on ADAMS

随着带式输送机应用范围的扩大,以及带速的提高,动态特性问题成为影响带式输送机运行的重要因素,同时,输送路线受到地形地貌以及建筑物等障碍物的影响,导致带式输送机需要曲线布置。运行参数、弯曲段布置参数等对输送机稳定运行也有很大的影响。特别是大型高速平面转弯带式输送机需要研究其动态特性。利用Pro/E建立平面转弯带式输送机结构模型,应用动态分析软件ADAMS建立虚拟样机模型,分析运行速度、输送带刚度、转弯半径和转弯角度对平面转弯带式输送机动态特性的影响。结果表明:在允许范围内,增大输送带的刚度,可以减小启动过程中输送带张力和偏移量的峰值,提高运行的稳定性,输送带的张力和转弯处偏移量随转弯角度的增大而增加,大角度转弯会降低输送带的稳定性。

This paper is prompted by a specific solution to problems occurring in belt conveyor,such as the dynamic characteristics-an important factor affecting the operation of belt conveyor-due to the enlargement of the scope of application of belt conveyor and belt speed increase; the curve layout imposed on belt conveyor due to negative effect on transportation routes by the landform and obstacles including buildings; and a greater influence of operation parameters and roller structural layout in turning section on stable operation of belt conveyor and is necessitated by a novel study on the dynamic characteristics of large high-speed belt conveyor with horizontal curves. This study consists of utilizing Pro / E to build belt conveyor with horizontal curves; applying dynamics analysis software ADAMS to develop virtual prototype model;and analyzing the influence of running speed,conveyor belt stiffness,bending radius and the turning angle on dynamic characteristics of belt conveyor with horizontal curves. The result show that an increase in the stiffness of the conveyor belt leads to a reduction in the peak of belt tension and offset in the startup process,and a greater stability of the operation; belt tension and turning offset increases due to an increase in the turning point,and large turning angle triggers a reduced stability of the conveyor belt.